EP0658898A1 - Container of thermoformed plastic material used as envelope for cassette - Google Patents

Container of thermoformed plastic material used as envelope for cassette Download PDF

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Publication number
EP0658898A1
EP0658898A1 EP94402917A EP94402917A EP0658898A1 EP 0658898 A1 EP0658898 A1 EP 0658898A1 EP 94402917 A EP94402917 A EP 94402917A EP 94402917 A EP94402917 A EP 94402917A EP 0658898 A1 EP0658898 A1 EP 0658898A1
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EP
European Patent Office
Prior art keywords
walls
container
wall
container according
reliefs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EP94402917A
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German (de)
French (fr)
Inventor
Jacky Espallargas
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Emballages Techniques Et Conditionnements Etc SA
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Emballages Techniques Et Conditionnements Etc SA
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Publication of EP0658898A1 publication Critical patent/EP0658898A1/en
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
    • G11B23/023—Containers for magazines or cassettes
    • G11B23/0233—Containers for a single cassette

Definitions

  • the invention relates to a container made of thermoformed plastic such as a casing for a cassette.
  • Containers made of thermoformed plastic of the type already known are provided with first and second walls bearing against one another, rigidly associated with one another at their periphery, one of the walls being planar in its together when the container is open while the other wall has one or more peripheral surrounds defining the edges of the container.
  • the container is a casing for a cassette
  • it is associated with the same first flat wall, a second wall provided with two peripheral surrounds delimiting two compartments spaced from one another.
  • the walls are thin so as to be flexible, in particular between the two compartments, the surrounds of the two compartments are arranged to be able to come into contact and facing each other and are provided with complementary association reliefs.
  • the cassette envelope can be opened to be able to place or remove a cassette on the contrary and conversely, be closed, the complementary reliefs of the two surrounds then keeping the container closed.
  • the invention therefore aims to remedy these drawbacks by providing a plastic container of the type mentioned above and more specifically a casing for cassette.
  • the latter is made from thin walls of thermoformed plastic material allowing good flexibility of the hinge of the container while having sufficient rigidity at the place of the compartments where the cassette is housed, the container being devoid of any stiffening insert interposed between the two walls, inside each circle.
  • the invention provides two embodiments of a container of the type previously mentioned.
  • the container is first characterized by the fact that the two walls are rigidly secured to each other also inside the surround (s).
  • the two walls are joined to each other inside each surrounding over their entire area or, on the contrary, over only a part. In this case, this joining takes place from place to place in the form of point or elongated or surface areas.
  • the two walls are joined together by bonding, welding or clipping.
  • At least one of the two walls has stiffening reliefs in its zone of attachment to the other wall.
  • These stiffening reliefs are in the form of a series of projecting ribs separated by hollow grooves.
  • the wall provided with reliefs is rigidly associated with the other wall preferably at the location of the hollow grooves.
  • the container is characterized in that, on the one hand, at least one of the two walls has stiffening reliefs in its zone of attachment to the other wall and, on the other hand, the two walls are found to be secured to one another by simple contact inside the entourage (s).
  • said walls are made of a material having sufficient rigidity and have sufficient thickness.
  • the stiffening reliefs are in the form of a series of projecting ribs, extending substantially perpendicular to the axis of the hinge, that is to say extending in the small dimension of each entourage, and separated by hollow grooves.
  • the walls remain permanently in contact or almost in contact. Any phenomenon of deformation of the walls inside the surrounds is avoided both because of the arrangement of the ribs and grooves, but also because of the choice of material and of its thickness.
  • the wall with stiffening reliefs is the wall provided with the peripheral surround.
  • the invention also relates to a cassette container.
  • FIG. 1 is an elevation view of the container forming an envelope for a cassette in the closed state.
  • FIGS. 2 and 3 are two schematic side views of the container forming a casing for a cassette according to FIG. I, showing respectively the hinge and the side opposite the hinge.
  • Figure 4 is a schematic view of the open container, inward.
  • FIG. 5 is a schematic sectional view along the line V / V of FIG. 4.
  • FIG. 6 is a partial schematic view on a larger scale of FIG. 5.
  • the invention relates to a container which is, in this case, a cassette casing.
  • the container is essentially made of thermoformed plastic and has first and second walls 1, 2.
  • the first external wall 1 is planar as a whole.
  • the second wall 2 is located on the internal side of the container and has a tormented shape.
  • the two walls 1, 2 bear against one another in a certain number of contact zones.
  • the two walls 1, 2 are rigidly associated with each other at their free common periphery 3. This association is made by bonding, welding, or clipping.
  • the second internal wall 2 comprises two peripheral surrounds 4a, 4b, in relief.
  • the two surrounds 4a, 4b are separated from each other by a central zone 5 forming a hinge.
  • the two walls 1, 2 are thin and have the same thickness over their entire surface such that the middle zone 5 is flexible and hinge-shaped. This thickness can be, for example of the order of 20/100 to 35/100 mm, preferably 30/100 mm.
  • the wall 1 When the container forming an envelope for a cassette is closed, the wall 1 has two flat parts, substantially parallel to one another and one facing the other, separated by the curved part 5.
  • the two surrounds 4a, 4b have dimensions and are positioned in such a way that, when the envelope is closed, they come into contact and facing each other as well as is shown in Figures 2 and 3.
  • the surrounds 4a, 4b are provided with removable complementary association reliefs 6a, 6b.
  • the two surrounds 4a, 4b have, with respect to a base plane defined by the walls 1 and 2, substantially the same height, the joint plane 7 of the two surrounds 4a, 4b of the closed envelope being located substantially midway between the two planes delimiting the cover of the envelope.
  • the two surrounds 4a, 4b can have different heights.
  • one of the surrounds can occupy almost the entire thickness of the closed envelope, the other surround being reduced to the minimum height.
  • the surrounds 4a, 4b, shown rectangularly in the drawings may have other shapes adapted to the content placed in the envelope.
  • the reliefs of removable association 6a, 6b such as hollows or protrusions can be the subject of different alternative embodiments.
  • the surrounds 4a, 4b comprise stiffening reliefs 8 in the form of grooves and / or ribs extending substantially perpendicular to the plane of the walls 1, 2.
  • the surrounds 4a, 4b are placed slightly behind the periphery 3 so as to ensure a sufficient contact area on this periphery between the two walls 1, 2 and simultaneously, to protect the surrounds 4a, 4b.
  • the corners 9, 10 of the periphery 3 of the surrounds 4a, 4b are slightly rounded at the same time for reasons relating to the manufacture of the two walls 1, 2, but also not to hurt the user.
  • the two walls 1, 2 are secured to one another also inside the two surrounds 4a, 4b.
  • the container is devoid of any added stiffening insert, interposed between the two walls 1, 2.
  • at least one of the two walls - in this case the second wall 2 - has stiffening reliefs 11 in its area of attachment to the other wall 1. In this case the reliefs of stiffening 11 are located inside the surrounds 4a, 4b.
  • the two walls 1, 2 are joined, inside the surrounds 4a, 4b, from place to place, in the form of punctual or elongated or surface areas 12.
  • the stiffening reliefs 11 are in the form of a series of ribs 13 projecting in a protruding manner separated by hollow grooves 14.
  • the ribs 13 and the grooves 14 In cross section ( Figures 5 and 6), the ribs 13 and the grooves 14 have a profile flattened U-shaped.
  • the webs of the U of the ribs 13 and the webs of the U of the grooves 14 have substantially the same dimension.
  • the entire area of the second wall 2 in the surrounds 4a, 4b is formed by a succession of ribs 13 and grooves 14. According to the drawing, these ribs 13 and grooves 14 are placed substantially perpendicularly to the axis of the hinge 5, that is to say extend in the width of the surround.
  • the embodiments which have just been described more particularly have the advantage that the two walls 1, 2 are in contact with each other inside the surrounds 4a, 4b, at the location of the cores of the hollow grooves 14.
  • the cassette rests on the webs of the ribs 13.
  • the flattened nature of the ribs and grooves 13, 14 has the consequence that the space lost in the closed envelope or the excess thickness resulting from the ribs and grooves 13, 14 is very small and therefore does not constitute a drawback.
  • the embodiments which have just been described also have the advantage that the process of joining the two walls 1, 2 can be easily automated.
  • the second wall 2 in the case of a rigid connection, can pass over a sizing roller depositing suitable glue on the webs of the U of the hollow grooves, on the side facing the first wall.
  • the rigid connection can be carried out by ultrasonic welding, the two walls 1 and 2 being in contact, being the second wall 2 at the location of the webs of the U of the grooves recessed 14.
  • stiffening reliefs 11 are provided on the first wall 1, and not on the second wall 2. Or, there is provided stiffening reliefs 11 on the two walls 1, 2.
  • the invention also relates to a method of producing a container made of thermoformed plastic material such as a casing for a cassette which has just been described.
  • the two walls 1, 2 are produced separately, one of the walls being provided with the surround (s) 4a, 4b as well as the reliefs 6a, 6b, 8 and 11, 13, 14 previously described.
  • This joining can take place by gluing, welding or clipping, or by simple contact of the two walls 1, 2.

Abstract

The invention relates to a container made of thermoformed plastic material of the type including a first and a second wall (1, 2), the one bearing against the other, and which are coupled together rigidly at their periperhy (3). One of the walls (1) is planar as a whole when the container is open, whereas the other wall (2) includes a peripheral surround (4a, 4b) delimiting the edges of the container and including stiffening reliefs. The two walls (1, 2) are secured together also inside the surround(s) (4a, 4b). <IMAGE>

Description

L'invention concerne un conteneur en matière plastique thermoformée tel qu'une enveloppe pour cassette.The invention relates to a container made of thermoformed plastic such as a casing for a cassette.

On connaît déjà des conteneurs en matière plastique thermoformée du type comportant une première et une seconde parois en appui l'une contre l'autre, associées rigidement l'une à l'autre à leur périphérie, l'une des parois étant plane dans son ensemble lorsque le conteneur est ouvert tandis que l'autre paroi comporte un ou plusieurs entourages périphériques délimitant les chants du conteneur. Dans le cas où le conteneur est une enveloppe pour cassette, il est associé à une même première paroi plane, une seconde paroi pourvue de deux entourages périphériques délimitant deux compartiments écartés l'un de l'autre. Les parois sont minces de manière à être flexibles, notamment entre les deux compartiments, les entourages des deux compartiments sont agencés pour pouvoir venir en contact et en regard l'un avec l'autre et sont pourvus de reliefs d'association complémentaires. Ainsi l'enveloppe pour cassette peut être ouverte pour pouvoir y placer ou au contraire enlever une cassette et inversement, être fermée, les reliefs complémentaires des deux entourages maintenant alors le conteneur fermé.Containers made of thermoformed plastic of the type already known are provided with first and second walls bearing against one another, rigidly associated with one another at their periphery, one of the walls being planar in its together when the container is open while the other wall has one or more peripheral surrounds defining the edges of the container. In the case where the container is a casing for a cassette, it is associated with the same first flat wall, a second wall provided with two peripheral surrounds delimiting two compartments spaced from one another. The walls are thin so as to be flexible, in particular between the two compartments, the surrounds of the two compartments are arranged to be able to come into contact and facing each other and are provided with complementary association reliefs. Thus the cassette envelope can be opened to be able to place or remove a cassette on the contrary and conversely, be closed, the complementary reliefs of the two surrounds then keeping the container closed.

Dans une telle réalisation, on rencontre un problème découlant de la faible épaisseur des parois. Celle-ci est nécessaire pour assurer la flexibilité entre les deux compartiments pour former une charnière. Mais, inversement, cette flexibilité constitue un inconvénient pour la partie restante du conteneur (à savoir ses grandes faces correspondant aux grandes faces de la casette).In such an embodiment, there is a problem arising from the small thickness of the walls. This is necessary to ensure flexibility between the two compartments to form a hinge. But, conversely, this flexibility constitutes a drawback for the remaining part of the container (namely its large faces corresponding to the large faces of the casette).

Dans l'état connu de la technique, on a surmonté cet inconvénient en interposant entre les deux parois et à l'intérieur de chaque entourage, mais à l'exception de la zone flexible formant charnière, un insert de rigidification par exemple sous la forme d'une découpe en carton.In the known state of the art, this drawback has been overcome by interposing between the two walls and inside each surround, but with the exception of the flexible zone forming a hinge, a stiffening insert for example in the form of a cardboard cutout.

Néanmoins, une telle réalisation s'accommode mal d'une industrialisation poussée de la fabrication et elle est onéreuse.However, such an embodiment is ill-suited to advanced industrialization of manufacturing and it is expensive.

L'invention a donc pour but de remédier à ces inconvénients en proposant un conteneur en matière plastique du type mentionné précédemment et plus spécialement une enveloppe pour cassette. Cette dernière est réalisée à partir de parois minces en matière plastique thermoformée permettant une bonne flexibilité de la charnière du conteneur tout en ayant une rigidité suffisante à l'endroit des compartiments où est logée la cassette, le conteneur étant dépourvu de tout insert de rigidification interposé entre les deux parois, à l'intérieur de chaque entourage. A cet effet, l'invention propose deux modes de réalisation d'un conteneur du type précédemment mentionné.The invention therefore aims to remedy these drawbacks by providing a plastic container of the type mentioned above and more specifically a casing for cassette. The latter is made from thin walls of thermoformed plastic material allowing good flexibility of the hinge of the container while having sufficient rigidity at the place of the compartments where the cassette is housed, the container being devoid of any stiffening insert interposed between the two walls, inside each circle. To this end, the invention provides two embodiments of a container of the type previously mentioned.

Selon un premier mode de réalisation, le conteneur est d'abord caractérisé par le fait que les deux parois sont solidarisées rigidement l'une à l'autre également à l'intérieur du ou des entourages.According to a first embodiment, the container is first characterized by the fact that the two walls are rigidly secured to each other also inside the surround (s).

Les deux parois sont solidarisées l'une à l'autre à l'intérieur de chaque entourage sur la totalité de leur superficie ou, au contraire, sur une partie seulement. Dans ce cas, cette solidarisation intervient de place en place sous forme de zones ponctuelles ou longilignes ou surfaciques.The two walls are joined to each other inside each surrounding over their entire area or, on the contrary, over only a part. In this case, this joining takes place from place to place in the form of point or elongated or surface areas.

La solidarisation des deux parois est assurée par collage, soudage ou clipsage.The two walls are joined together by bonding, welding or clipping.

Selon une caractéristique importante du présent mode de réalisation, l'une au moins des deux parois comporte des reliefs de rigidification dans sa zone de solidarisation avec l'autre paroi. Ces reliefs de rigidification se présentent sous la forme d'une série de nervures en saillie séparées par des rainures en creux. La paroi pourvue de reliefs est associée rigidement à l'autre paroi préférentiellement à l'endroit des rainures en creux.According to an important characteristic of the present embodiment, at least one of the two walls has stiffening reliefs in its zone of attachment to the other wall. These stiffening reliefs are in the form of a series of projecting ribs separated by hollow grooves. The wall provided with reliefs is rigidly associated with the other wall preferably at the location of the hollow grooves.

Selon un second mode de réalisation, le conteneur est caractérisé par le fait que d'une part, l'une au moins des deux parois comporte des reliefs de rigidification dans sa zone de solidarisation avec l'autre paroi et d'autre part, les deux parois se trouvent être solidarisées l'une à l'autre par simple contact à l'intérieur du ou des entourages. A cet effet, lesdites parois sont réalisées en un matériau présentant une rigidité suffisante et ont une épaisseur suffisante.According to a second embodiment, the container is characterized in that, on the one hand, at least one of the two walls has stiffening reliefs in its zone of attachment to the other wall and, on the other hand, the two walls are found to be secured to one another by simple contact inside the entourage (s). To this end, said walls are made of a material having sufficient rigidity and have sufficient thickness.

Afin de renforcer la rigidité des parois, les reliefs de rigidification se présentent sous la forme d'une série de nervures en saillie, s'étendant sensiblement perpendiculairement à l'axe de la charnière, c'est-à-dire s'étendant dans la petite dimension de chaque entourage, et séparées par des rainures en creux.In order to reinforce the rigidity of the walls, the stiffening reliefs are in the form of a series of projecting ribs, extending substantially perpendicular to the axis of the hinge, that is to say extending in the small dimension of each entourage, and separated by hollow grooves.

Ainsi, les parois restent en permanence en contact ou quasiment en contact. Tout phénomène de déformation des parois à l'intérieur des entourages est évité à la fois du fait de la disposition des nervures et rainures, mais aussi du choix du matériau et de son épaisseur.Thus, the walls remain permanently in contact or almost in contact. Any phenomenon of deformation of the walls inside the surrounds is avoided both because of the arrangement of the ribs and grooves, but also because of the choice of material and of its thickness.

Selon une version avantageuse de l'invention, la paroi à reliefs de rigidification est la paroi pourvue de l'entourage périphérique.According to an advantageous version of the invention, the wall with stiffening reliefs is the wall provided with the peripheral surround.

L'invention concerne également un conteneur pour cassette.The invention also relates to a cassette container.

Les autres caractéristiques de l'invention résulteront de la description qui suivra d'une forme de réalisation possible, mais nullement limitative d'un conteneur selon l'invention se présentant sous la forme d'une enveloppe pour cassette.The other characteristics of the invention will result from the description which follows of a possible, but in no way limiting, embodiment of a container according to the invention in the form of an envelope for a cassette.

La figure 1 est une vue en élévation du conteneur formant enveloppe pour cassette à l'état fermé.FIG. 1 is an elevation view of the container forming an envelope for a cassette in the closed state.

Les figures 2 et 3 sont deux vues schématiques de côté du conteneur formant enveloppe pour cassette selon la figure I, montrant respectivement la charnière et le côté opposé à la charnière.FIGS. 2 and 3 are two schematic side views of the container forming a casing for a cassette according to FIG. I, showing respectively the hinge and the side opposite the hinge.

La figure 4 est une vue schématique du conteneur ouvert, vers l'intérieur.Figure 4 is a schematic view of the open container, inward.

La figure 5 est une vue schématique en coupe selon la ligne V/V de la figure 4.FIG. 5 is a schematic sectional view along the line V / V of FIG. 4.

La figure 6 est une vue schématique partielle à plus grande échelle de la figure 5.FIG. 6 is a partial schematic view on a larger scale of FIG. 5.

L'invention concerne un conteneur qui est, en l'occurrence, une enveloppe pour cassette. Le conteneur est essentiellement constitué en matière plastique thermoformée et comporte une première et une seconde paroi 1, 2.The invention relates to a container which is, in this case, a cassette casing. The container is essentially made of thermoformed plastic and has first and second walls 1, 2.

Lorsque le conteneur formant enveloppe pour cassette est totalement ouvert ainsi qu'il est représenté sur la figure 4, la première paroi 1, externe, est plane dans son ensemble. La seconde paroi 2 est située du côté interne du conteneur et elle présente une forme tourmentée.When the container forming an envelope for a cassette is fully open as shown in FIG. 4, the first external wall 1 is planar as a whole. The second wall 2 is located on the internal side of the container and has a tormented shape.

Les deux parois 1, 2 sont en appui l'une contre l'autre dans un certain nombre de zones de contact.The two walls 1, 2 bear against one another in a certain number of contact zones.

Les deux parois 1, 2 sont associées rigidement l'une à l'autre à leur périphérie commune libre 3. Cette association est réalisée par collage, soudage, ou clipsage.The two walls 1, 2 are rigidly associated with each other at their free common periphery 3. This association is made by bonding, welding, or clipping.

Dans la réalisation considérée, la seconde paroi interne 2 comprend deux entourages 4a, 4b périphériques, en relief.In the embodiment considered, the second internal wall 2 comprises two peripheral surrounds 4a, 4b, in relief.

Ces deux entourages 4a, 4b sont séparés l'un de l'autre par une zone médiane 5 formant charnière. Les deux parois 1, 2 sont minces et ont sur la totalité de leur surface une même épaisseur telle que la zone médiane 5 est flexible et forme charnière. Cette épaisseur peut être, par exemple de l'ordre de 20/100 à 35/100 mm, préférentiellement 30/100 mm. Lorsque le conteneur formant enveloppe pour cassette est fermé, la paroi 1 comporte deux parties planes, sensiblement parallèles l'une à l'autre et l'une en regard de l'autre, séparées par la partie 5 incurvée.These two surrounds 4a, 4b are separated from each other by a central zone 5 forming a hinge. The two walls 1, 2 are thin and have the same thickness over their entire surface such that the middle zone 5 is flexible and hinge-shaped. This thickness can be, for example of the order of 20/100 to 35/100 mm, preferably 30/100 mm. When the container forming an envelope for a cassette is closed, the wall 1 has two flat parts, substantially parallel to one another and one facing the other, separated by the curved part 5.

Dans la réalisation représentée, les deux entourages 4a, 4b, ont des dimensions et sont positionnés d'une manière telle que, lorsque l'enveloppe est fermée, ils viennent en contact et en regard l'un avec l'autre ainsi qu'il est représenté sur les figures 2 et 3.In the embodiment shown, the two surrounds 4a, 4b, have dimensions and are positioned in such a way that, when the envelope is closed, they come into contact and facing each other as well as is shown in Figures 2 and 3.

Ils constituent alors, l'enveloppe formant une sorte de livre, les trois tranches ou chants de ce livre tandis que la zone flexible 5 en constitue le dos et la première paroi 1 en constitue la couverture.They then constitute, the envelope forming a sort of book, the three sections or edges of this book while the flexible zone 5 constitutes the back and the first wall 1 constitutes the cover.

Les entourages 4a, 4b sont pourvus de reliefs d'association complémentaires amovible 6a, 6b.The surrounds 4a, 4b are provided with removable complementary association reliefs 6a, 6b.

Dans la réalisation représentée, les deux entourages 4a, 4b ont, par rapport à un plan de base défini par les parois 1 et 2, sensiblement la même hauteur, le plan de joint 7 des deux entourages 4a, 4b de l'enveloppe fermée étant situé sensiblement à mi distance des deux plans délimitant la couverture de l'enveloppe.In the embodiment shown, the two surrounds 4a, 4b have, with respect to a base plane defined by the walls 1 and 2, substantially the same height, the joint plane 7 of the two surrounds 4a, 4b of the closed envelope being located substantially midway between the two planes delimiting the cover of the envelope.

Dans d'autres réalisations possibles, non représentées, les deux entourages 4a, 4b peuvent avoir des hauteurs différentes. Par exemple, l'un des entourages peut occuper la presque totalité de l'épaisseur de l'enveloppe fermée, l'autre entourage étant réduit à la hauteur minimale.In other possible embodiments, not shown, the two surrounds 4a, 4b can have different heights. For example, one of the surrounds can occupy almost the entire thickness of the closed envelope, the other surround being reduced to the minimum height.

Les entourages 4a, 4b, représentés de façon rectangulaire sur les dessins peuvent avoir d'autres formes adaptées au contenu placé dans l'enveloppe.The surrounds 4a, 4b, shown rectangularly in the drawings may have other shapes adapted to the content placed in the envelope.

Les reliefs d'association amovible 6a, 6b tels que des creux ou saillies peuvent faire l'objet de différentes variantes de réalisation.The reliefs of removable association 6a, 6b such as hollows or protrusions can be the subject of different alternative embodiments.

Préférentiellement, les entourages 4a, 4b comprennent des reliefs de rigidification 8 sous forme de rainures et/ou de nervures s'étendant sensiblement perpendiculairement au plan des parois 1, 2.Preferably, the surrounds 4a, 4b comprise stiffening reliefs 8 in the form of grooves and / or ribs extending substantially perpendicular to the plane of the walls 1, 2.

Préférentiellement, les entourages 4a, 4b sont placés légèrement en retrait par rapport à la périphérie 3 de manière à assurer une zone de contact suffisante sur cette périphérie entre les deux parois 1, 2 et simultanément, à protéger les entourages 4a, 4b. Egalement, dans une forme de réalisation préférentielle telle qu'illustrée sur les dessins, les coins 9, 10 de la périphérie 3 des entourages 4a, 4b sont légèrement arrondis à la fois pour des raisons tenant à la fabrication des deux parois 1, 2, mais également pour ne pas blesser l'utilisateur.Preferably, the surrounds 4a, 4b are placed slightly behind the periphery 3 so as to ensure a sufficient contact area on this periphery between the two walls 1, 2 and simultaneously, to protect the surrounds 4a, 4b. Also, in a preferred embodiment as illustrated in the drawings, the corners 9, 10 of the periphery 3 of the surrounds 4a, 4b are slightly rounded at the same time for reasons relating to the manufacture of the two walls 1, 2, but also not to hurt the user.

Selon l'invention, les deux parois 1, 2 sont solidarisées l'une à l'autre également à l'intérieur des deux entourages 4a, 4b. De plus, le conteneur est dépourvu de tout insert de rigidification rapporté, interposé entre les deux parois 1, 2. Enfin, l'une au moins des deux parois - en l'occurrence la seconde paroi 2 - comporte des reliefs de rigidification 11 dans sa zone de solidarisation avec l'autre paroi 1. En l'occurrence les reliefs de rigidification 11 sont situés à l'intérieur des entourages 4a, 4b.According to the invention, the two walls 1, 2 are secured to one another also inside the two surrounds 4a, 4b. In addition, the container is devoid of any added stiffening insert, interposed between the two walls 1, 2. Finally, at least one of the two walls - in this case the second wall 2 - has stiffening reliefs 11 in its area of attachment to the other wall 1. In this case the reliefs of stiffening 11 are located inside the surrounds 4a, 4b.

Etant donné l'absence de tout insert entre les deux parois 1, 2, celles-ci peuvent être solidarisées directement l'une à l'autre par collage, soudage ou clipsage, soit sur la totalité de leur superficie, soit sur une partie seulement de celle-ci.Given the absence of any insert between the two walls 1, 2, these can be secured directly to each other by gluing, welding or clipping, either over their entire surface, or over only a part of it.

Toutefois, la solidarisation des deux parois 1, 2 par simple contact entre elles au niveau des reliefs de rigidification 11 assure une bonne rigidité du boîtier en l'absence de tout insert.However, the joining of the two walls 1, 2 by simple contact between them at the level of the stiffening reliefs 11 ensures good rigidity of the housing in the absence of any insert.

Dans la variante illustrée sur les dessins, les deux parois 1, 2, sont solidarisées, à l'intérieur des entourages 4a, 4b de place en place, sous forme de zones ponctuelles ou longilignes ou surfaciques 12.In the variant illustrated in the drawings, the two walls 1, 2 are joined, inside the surrounds 4a, 4b, from place to place, in the form of punctual or elongated or surface areas 12.

Les reliefs de rigidification 11 se présentent sous la forme d'une série de nervures 13 placées de façon saillante séparées par des rainures en creux 14. En section droite transversale (figures 5 et 6), les nervures 13 et les rainures 14 ont un profil en forme de U aplati. Les âmes des U des nervures 13 et les âmes des U des rainures 14 ont sensiblement la même dimension. Dans cette variante de réalisation, la totalité de la superficie de la seconde paroi 2 dans les entourages 4a, 4b est formée d'une succession de nervures 13 et de rainures 14. Selon le dessin, ces nervures 13 et rainures 14 sont placées sensiblement perpendiculairement à l'axe de la charnière 5, c'est-à-dire s'étendent dans la largeur de l'entourage.The stiffening reliefs 11 are in the form of a series of ribs 13 projecting in a protruding manner separated by hollow grooves 14. In cross section (Figures 5 and 6), the ribs 13 and the grooves 14 have a profile flattened U-shaped. The webs of the U of the ribs 13 and the webs of the U of the grooves 14 have substantially the same dimension. In this alternative embodiment, the entire area of the second wall 2 in the surrounds 4a, 4b is formed by a succession of ribs 13 and grooves 14. According to the drawing, these ribs 13 and grooves 14 are placed substantially perpendicularly to the axis of the hinge 5, that is to say extend in the width of the surround.

Les réalisations qui viennent d'être décrites plus spécialement ont comme avantage que les deux parois 1, 2 sont en contact l'une avec l'autre à l'intérieur des entourages 4a, 4b, à l'endroit des âmes des rainures en creux 14. La cassette repose sur les âmes des nervures 13. Le caractère aplati des nervures et des rainures 13, 14 a comme conséquence que la place perdue dans l'enveloppe fermée ou encore la surépaisseur résultant des nervures et rainures 13, 14 est très faible et ne constitue donc pas un inconvénient.The embodiments which have just been described more particularly have the advantage that the two walls 1, 2 are in contact with each other inside the surrounds 4a, 4b, at the location of the cores of the hollow grooves 14. The cassette rests on the webs of the ribs 13. The flattened nature of the ribs and grooves 13, 14 has the consequence that the space lost in the closed envelope or the excess thickness resulting from the ribs and grooves 13, 14 is very small and therefore does not constitute a drawback.

Les réalisations qui viennent d'être décrites ont également comme avantage que le processus de solidarisation des deux parois 1, 2 peut être aisément automatisé. Par exemple dans une variante possible de procédé, dans le cas d'une solidarisation rigide, la seconde paroi 2 peut passer sur un rouleau d'encollage déposant de la colle appropriée sur les âmes des U des rainures en creux, du côté tourné vers la première paroi. Dans une autre variante possible de procédé de réalisation, la solidarisation rigide peut être réalisée par soudage ultra-sons, les deux parois 1 et 2 étant en contact, s'agissant de la seconde paroi 2 à l'endroit des âmes des U des rainures en creux 14.The embodiments which have just been described also have the advantage that the process of joining the two walls 1, 2 can be easily automated. For example, in a possible variant of the process, in the case of a rigid connection, the second wall 2 can pass over a sizing roller depositing suitable glue on the webs of the U of the hollow grooves, on the side facing the first wall. In another possible variant of the production method, the rigid connection can be carried out by ultrasonic welding, the two walls 1 and 2 being in contact, being the second wall 2 at the location of the webs of the U of the grooves recessed 14.

Dans d'autres réalisations possibles, les reliefs de rigidification 11, sont prévus sur la première paroi 1, et non sur la seconde paroi 2. Ou encore, il est prévu des reliefs de rigidification 11 sur les deux parois 1, 2.In other possible embodiments, the stiffening reliefs 11 are provided on the first wall 1, and not on the second wall 2. Or, there is provided stiffening reliefs 11 on the two walls 1, 2.

L'invention concerne également un procédé de réalisation d'un conteneur en matière plastique thermoformée tel qu'une enveloppe pour cassette qui vient d'être décrite. Dans ce procédé on réalise séparément les deux parois 1, 2, une des parois étant pourvue du ou des entourages 4a, 4b ainsi que des reliefs 6a, 6b, 8 et 11, 13, 14 précédemment décrits.The invention also relates to a method of producing a container made of thermoformed plastic material such as a casing for a cassette which has just been described. In this process, the two walls 1, 2 are produced separately, one of the walls being provided with the surround (s) 4a, 4b as well as the reliefs 6a, 6b, 8 and 11, 13, 14 previously described.

Puis les deux parois 1, 2 ainsi réalisées sont amenées l'une en regard de l'autre.Then the two walls 1, 2 thus produced are brought one opposite the other.

En l'absence de toute phase d'insertion entre les deux parois d'un insert de rigidification rapporté, il peut alors être procédé à la solidarisation des deux parois 1, 2.In the absence of any phase of insertion between the two walls of an added stiffening insert, it can then be carried out the joining of the two walls 1, 2.

Cette solidarisation peut intervenir par collage, soudage ou clipsage, ou par simple contact des deux parois 1, 2.This joining can take place by gluing, welding or clipping, or by simple contact of the two walls 1, 2.

Claims (15)

Conteneur en matière plastique thermoformée du type comportant une première et une seconde parois (1, 2), en appui l'une contre l'autre, associées rigidement l'une à l'autre à leur périphérie (3), l'une des parois (1) étant plane dans son ensemble lorsque le conteneur est ouvert tandis que l'autre paroi (2) comporte un entourage périphérique (4a, 4b) délimitant les chants du conteneur, ledit conteneur étant dépourvu de tout insert de rigidification interposé entre les deux parois (1, 2), à l'intérieur de chaque entourage (4a, 4b), caractérisé par le fait que les deux parois (1, 2) sont solidarisées rigidement l'une à l'autre également à l'intérieur du ou des entourage(s) (4a, 4b).Container of thermoformed plastic of the type comprising first and second walls (1, 2), bearing against one another, rigidly associated with each other at their periphery (3), one of the walls (1) being planar as a whole when the container is open while the other wall (2) has a peripheral surround (4a, 4b) delimiting the edges of the container, said container being devoid of any stiffening insert interposed between the two walls (1, 2), inside each surround (4a, 4b), characterized in that the two walls (1, 2) are rigidly secured to each other also inside the or entourage (s) (4a, 4b). Conteneur selon la revendication 1, caractérisé par le fait que les deux parois (1, 2) sont solidarisées l'une à l'autre sur la totalité de leur superficie.Container according to claim 1, characterized in that the two walls (1, 2) are integral with each other over their entire surface. Conteneur selon la revendication 1, caractérisé par le fait que les deux parois (1, 2) sont solidarisées l'une à l'autre à l'intérieur de chaque entourage (4a, 4b) sur une partie seulement de leur superficie.Container according to claim 1, characterized in that the two walls (1, 2) are secured to each other inside each surround (4a, 4b) over only part of their area. Conteneur selon la revendication 3, caractérisé par le fait que les deux parois (1, 2) sont solidarisées l'une à l'autre de place en place sous forme de zones de solidarisation (12) ponctuelles ou longilignes ou surfaciques.Container according to claim 3, characterized in that the two walls (1, 2) are joined to one another from place to place in the form of point-to-point or elongated or elongated or surface joining zones (12). Conteneur selon la revendication 1, caractérisé par le fait que les deux parois (1, 2) sont solidarisées l'une à l'autre rigidement par collage, soudage ou clipsage.Container according to claim 1, characterized in that the two walls (1, 2) are rigidly joined to one another by gluing, welding or clipping. Conteneur selon la revendication 1, caractérisé par le fait que l'une au moins des deux parois (2) comporte des reliefs de rigidification (11) dans sa zone de solidarisation avec l'autre paroi (1).Container according to claim 1, characterized in that at least one of the two walls (2) has stiffening reliefs (11) in its zone of connection with the other wall (1). Conteneur selon la revendication 6, caractérisé par le fait que les reliefs de rigidification (11) se présentent sous la forme d'une série de nervures (13) en saillie séparées par des rainures en creux (14).Container according to claim 6, characterized in that the stiffening reliefs (11) are in the form of a series of projecting ribs (13) separated by recessed grooves (14). Conteneur selon la revendication 7, caractérisé par le fait que la paroi (2) pourvue de reliefs est associée rigidement à l'autre paroi (1) à l'endroit des rainures en creux (14).Container according to claim 7, characterized in that the wall (2) provided with reliefs is rigidly associated with the other wall (1) at the location of the hollow grooves (14). Conteneur selon l'une quelconque des revendications 1 à 8, caractérisé par le fait que sur une même première paroi (1) est associée rigidement une seconde paroi (2) pourvue de deux entourages (4a, 4b) délimitant deux compartiments écartés l'un de l'autre par une zone flexible (5) des deux parois (1, 2) formant charnière, les deux entourages (4a, 4b) pouvant venir en contact et en regard l'un avec l'autre et étant pourvus de reliefs d'association amovible complémentaires (6a, 6b).Container according to any one of claims 1 to 8, characterized in that on the same first wall (1) is rigidly associated a second wall (2) provided with two surrounds (4a, 4b) delimiting two compartments separated one on the other by a flexible zone (5) of the two walls (1, 2) forming a hinge, the two surrounds (4a, 4b) being able to come into contact and facing each other and being provided with reliefs d 'additional removable association (6a, 6b). Conteneur en matière plastique thermoformée du type comportant une première et une seconde parois (1, 2), en appui l'une contre l'autre, associées rigidement l'une à l'autre à leur périphérie (3), l'une des parois (1) étant plane dans son ensemble lorsque le conteneur est ouvert tandis que l'autre paroi (2) comporte un entourage périphérique (4a, 4b) délimitant les chants du conteneur, ledit conteneur étant dépourvu de tout insert de rigidification interposé entre les deux parois (1, 2), caractérisé par le fait que l'une au moins des deux parois (2) comporte des reliefs de rigidification (11) dans sa zone de solidarisation avec l'autre paroi (1) et par le fait que les deux parois (1, 2) se trouvent être solidarisées l'une à l'autre par simple contact à l'intérieur du ou des entourage(s) (4a, 4b).Container of thermoformed plastic of the type comprising first and second walls (1, 2), bearing against one another, rigidly associated with each other at their periphery (3), one of the walls (1) being planar as a whole when the container is open while the other wall (2) has a peripheral surround (4a, 4b) defining the edges of the container, said container being devoid of any stiffening insert interposed between the two walls (1, 2), characterized by the fact that at least one of the two walls (2) has stiffening reliefs (11) in its zone of attachment to the other wall (1) and by the fact that the two walls (1, 2) are secured to one another by simple contact inside the surrounding (s) (4a, 4b). Conteneur selon la revendication 9, caractérisé par le fait que les reliefs de rigidification (11) se présentent sous la forme d'une série de nervures (13) en saillie, s'étendant sensiblement perpendiculairement à l'axe de la zone flexible (5) formant charnière, et séparées par des rainures en creux (14).Container according to claim 9, characterized in that the stiffening reliefs (11) are in the form of a series of projecting ribs (13), extending substantially perpendicular to the axis of the flexible zone (5 ) forming a hinge, and separated by hollow grooves (14). Conteneur selon la revendication 6 ou 10, caractérisé par le fait que la paroi (2) à reliefs de rigidification est la paroi pourvue de l'entourage périphérique (4a, 4b).Container according to claim 6 or 10, characterized in that the wall (2) with stiffening reliefs is the wall provided with the peripheral surround (4a, 4b). Conteneur selon l'une quelconque des revendications 1 à 12, caractérisé par le fait que les parois (1, 2) sont minces en ayant une même épaisseur leur conférant une certaine flexibilité, et sont réalisées en un matériau présentant une rigidité suffisante.Container according to any one of claims 1 to 12, characterized in that the walls (1, 2) are thin having the same thickness giving them a certain flexibility, and are made of a material having sufficient rigidity. Conteneur selon l'une quelconque des revendications 1 à 13, caractérisé par le fait qu'il forme une enveloppe pour cassette.Container according to any one of Claims 1 to 13, characterized in that it forms an envelope for a cassette. Procédé de réalisation d'un conteneur selon l'une quelconque des revendications 1 à 14, caractérisé par le fait que l'on réalise séparément une première et une seconde parois (1, 2), et sans étape d'interposition entre les deux parois (1, 2) d'un insert de rigidification, on solidarise les deux parois (1, 2), d'une part par soudage ou collage dans leur périphérie (3) et d'autre part par soudage ou collage, ou par simple contact, dans des zones de solidarisation (12) où les deux parois (1, 2) sont en contact l'une avec l'autre.Method for producing a container according to any one of Claims 1 to 14, characterized in that a first and a second wall (1, 2) are produced separately, and without step of interposition between the two walls (1, 2) of a stiffening insert, we secures the two walls (1, 2), on the one hand by welding or bonding in their periphery (3) and on the other hand by welding or bonding, or by simple contact, in jointing zones (12) where the two walls (1, 2) are in contact with each other.
EP94402917A 1993-12-16 1994-12-16 Container of thermoformed plastic material used as envelope for cassette Withdrawn EP0658898A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9315169 1993-12-16
FR9315169A FR2714024B1 (en) 1993-12-16 1993-12-16 Thermoformed plastic container such as a cassette casing.

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EP0658898A1 true EP0658898A1 (en) 1995-06-21

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2503667A1 (en) * 1981-04-08 1982-10-15 Std Vrac Moulded plastics box for video cassettes - uses two rectangular half boxes with integrally moulded plastics spine, and clear plastics jacket welded round outer edges
AU539485B3 (en) * 1984-06-27 1984-10-11 Sagamore Industries Proprietary Limited Container for tape cassette
DE8433419U1 (en) * 1984-11-12 1985-08-01 G.K.V. Video-Vertriebs-GmbH, 1000 Berlin Container for storing audio cassettes
DE8530298U1 (en) * 1985-02-15 1986-01-02 Forty Four B.V., Arnhem Box for storing a video cassette or similar items
US4641750A (en) * 1985-10-15 1987-02-10 Blackbourn, Inc. Two-ply cassette album and method of making same
FR2586498A1 (en) * 1985-08-23 1987-02-27 Brun Pierre Method of making cases, in particular for video cassettes with a view to ensuring their authenticity
US4778051A (en) * 1986-05-19 1988-10-18 Sunrise Plastics, Inc. Book-like holder and method for making book-like holders
US4784264A (en) * 1986-11-26 1988-11-15 Blackbourn Inc Display album

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2503667A1 (en) * 1981-04-08 1982-10-15 Std Vrac Moulded plastics box for video cassettes - uses two rectangular half boxes with integrally moulded plastics spine, and clear plastics jacket welded round outer edges
AU539485B3 (en) * 1984-06-27 1984-10-11 Sagamore Industries Proprietary Limited Container for tape cassette
DE8433419U1 (en) * 1984-11-12 1985-08-01 G.K.V. Video-Vertriebs-GmbH, 1000 Berlin Container for storing audio cassettes
DE8530298U1 (en) * 1985-02-15 1986-01-02 Forty Four B.V., Arnhem Box for storing a video cassette or similar items
FR2586498A1 (en) * 1985-08-23 1987-02-27 Brun Pierre Method of making cases, in particular for video cassettes with a view to ensuring their authenticity
US4641750A (en) * 1985-10-15 1987-02-10 Blackbourn, Inc. Two-ply cassette album and method of making same
US4778051A (en) * 1986-05-19 1988-10-18 Sunrise Plastics, Inc. Book-like holder and method for making book-like holders
US4784264A (en) * 1986-11-26 1988-11-15 Blackbourn Inc Display album

Also Published As

Publication number Publication date
FR2714024B1 (en) 1996-03-08
FR2714024A1 (en) 1995-06-23

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